The invention discloses a protective device for propellers of an unmanned aircraft. The protective device consists of an aluminum substrate, a plurality of fixing screws and a propeller protecting hood. The protective device is characterized in that an edge rib is prefabricated on the outer edge of the aluminum substrate; a protection-hood inserting groove matched with the edge of the propeller protecting hood is formed in one side of the edge rib, and the edge part of the propeller protecting hood is fixed through the penetration of the fixing screws; an oblique conical surface is prefabricated on the outer edge of the protection-hood inserting groove; a plurality of round holes are formed in the plate body of the aluminum substrate; propeller reserving openings are respectively formed in both sides of the propeller protecting hood. The edge rib is prefabricated on the outer edge of the aluminum substrate, the protection-hood inserting groove matched with the edge of the propeller protecting hood is formed in one side of the edge rib, and the edge part of the propeller protecting hood is fixed through the penetration of the fixing screws, so that the protective device is convenient to mount and dismount, and is safe and firm. The oblique conical surface is prefabricated on the outer edge of the protection-hood inserting groove, so that the weight of parts can be reduced, the manufacturing materials can be saved, and the air resistance can be furthest reduced.
Protective device for propellers of unmanned aircraft
2015-11-04
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
SAE Technical Papers | 1929
|Engineering Index Backfile | 1929
|Engineering Index Backfile | 1929
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